Conceptual

mRNA Genetic Codons in Protein Synthesis

Messenger RNA (mRNA) functions within molecular genetics and protein synthesis by serving as a single-stranded polynucleotide carrier that transmits genetic information from DNA to the ribosome for translation into proteins. The core mechanism involves discrete sequences of three successive nucleotides known as genetic codons, where each triplet specifies a particular amino acid in accordance with the universal genetic code composed of bases adenine, uracil, guanine, and cytosine. This process is structurally constrained by an initiation codon at the 5' end determining protein start sites and a termination codon at the 3' end signaling peptide chain elongation cessation.